If that is the case it is not likely going to help the issue. This is more likely the issue stated above regarding your cable.

Perhaps you have a friend with a different computer you can try it on to be sure?

Ok, i have now tried one old Dell running Windows XP, one newer HP running Win8 and my own Mac running win10, all with the same result. I have also tried without the USB extention to eliminate any signal errors. Could the dongle be faulty?